核电站管道射线检测非典型影像的评判与处理  

Evaluation and treatment of atypical defects in radio-graphic inspection of nuclear power plant pipelines

作　　者：黄清辉 项杰波 朱从斌 HUANG Qinghui;XIANG Jiebo;ZHU Congbin(China Nuclear Power Engineering Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]中广核工程有限公司,深圳518000

出　　处：《无损检测》2025年第3期88-93,共6页Nondestructive Testing

摘　　要：在射线检测工程实践中发现,核电站管道安装过程中通常会出现非典型缺陷影像,增加了管道焊缝质量评价及控制的难度。结合管道射线检测成像特点和缺陷形成机制,核电站压力管道焊缝的射线检测非典型缺陷影像大体可以划分为壁厚减薄、组焊错边、焊缝成形类缺陷、母材缺陷、异物遮挡、蚀坑缺陷、表面机械损伤等。结合非典型缺陷影像的分类,以及相关底片影像的辨识、评判与处理,提出了一种核电站管道焊缝检测的综合评定方法,为类似管道工程的施工焊接质量控制提供一定借鉴。In the practice of radio-graphic inspection engineering,the atypical defect images are usually found in the pipeline installation stage of nuclear power plant,which increases the difficulty of the quality evaluation and control of the pipeline weld.Combined with the imaging characteristics and defect formation mechanism of pipeline radiographic inspection,the atypical defect images of weld radiographic inspection of pressure pipelines in nuclear power plants can be roughly divided into wall thickness thinning,misalignment of welding,weld forming defects,base metal defects,foreign body defects,pit defects,surface mechanical damage,etc.Through the classification of atypical displays and the identification,evaluation and processing of relevant negative images,a comprehensive method for the inspection and evaluation of pipeline welds in nuclear power plants was proposed,which provided a certain reference for the welding quality control of similar pipeline engineering construction.

关 键 词：核电站 射线检测 非典型缺陷影像 评判 处理建议 

分 类 号：TG115.28[金属学及工艺—物理冶金]